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Shimano’s new 105 gives the widest range of road riders the opportunity to ride a groupset that is inspired by professional riders. Whether it is for everyday riding or longer rides & climbs in the weekend.
The new 105 has an 11-speed drivetrain and adopted some key features from Dura-Ace and Ultegra. The 105 has that same light action and defined click engagement like Dura-Ace and Ultegra. Partly because of the polymer coated cables and partly because of the redesigned derailleurs and shift levers. This clearly shows Shimano’s philosophy of system engineering. All parts are individually designed to work together as one groupset. The shift levers have a compact grip which provides more comfort and control during a ride. The lever can be customized for different hand sizes with a 10mm screw type reach adjust. The front derailleur has a longer link arm combined with a new spring mechanism. Also the rear derailleur has a new spring mechanism and cable pitch, which provides robust adjustability.
The iconic four arm crank trickled down from Dura-Ace to the new 105 and gives the best power transfer and balance between stiffness and lightweight. It also has one bolt circle diameter for compact and traditional double chainsets which means one crankarm fits all chainring size. The chainrings are available in 34, 36, 39, 50, 52 and 53 teeth. The 11-speed cassette provides small gear steps that optimize rhythm and cadence control and is available in: 12-25, 11-28, 11-32. The chain is treated with Shimano’s SIL-TEC coating to run smoother and wear longer in all conditions.
Compared to the previous 105 groupset (5700) Shimano made the brake system more efficient and increased brake power with 10%. This is mainly due to the new symmetrical dual-pivot brake caliper. The brakes are compatible up to 28c tires and also available in a direct mount version (BR-5810).
The Shimano 105 5800 cassette is a high performance road cassette with hyperglide EV sprockets that have a computer designed tooth configuration.
These have contoured shift gates, resulting in a crisp smooth shift even under load
Shimano 5800 11 speed Chain, 116 link. This new 11-speed chain uses previous years Dura Ace technology and Shimano's low friction surface treatment Sil-Tec, to reduce friction.
Top Features of the Shimano 105 5800 Chain
Shimano 105 double chainset, a Lightweight HollowTech II 105 11-speed chainset. HollowTech II allows the bottom bracket bearings to be spaced wider apart, enabling the use of larger bearings and an increased axle diameter.
Top Features of the Shimano 105 5800 Chainset. ( Bottom bracket is BSA threaded english standard )
Shimano 105 5800 STI levers, feature ergonomically designed 11 speed 105 dual control levers. These levers come complete Polymer coated cables and silicon greased outer casing.
Top Features of the Shimano 105 5800 STI Shifters
Shimano 105 5800 Brake Calliper - This Dual pivot calliper brake is the racers' choice, 105 brake callipers come in a compact and lightweight design for high performance.
Top Features of the Shimano 105 5800 Brake Calliper
The Shimano 105 5800 Rear Dérailleur gives awesome shifting under all conditions. Increase rigidity and reliable long term quality with this 11 speed 105 short cage rear dérailleur.
Top Features of the Shimano 105 5800 Rear Derailleur
The Shimano 105 5800 front dérailleur is a wide link design, double front dérailleur for increased rigidity and improved shifting response. Made for use with 11 speed drive trains.
Top Features of the Shimano 105 5800 Braze-On Front Derailleur (BSA threaded english standard )
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